Fix typo

docs/pages/reference/core/next/index.mdx

@@ -9,7 +9,7 @@ Frames.js can be easily integrated with [Next.js](https://nextjs.org) applicatio
 Frames handler is responsible for rendering your Frames and also reacts to user interactions with buttons.
 
 ```tsx
-// app/frames/routes.tsx
+// app/frames/route.tsx
 /* eslint-disable react/jsx-key */
 import { createFrames, Button } from "frames.js/next";